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Fix FS#11007: Lua didn't parse negative numbers correct when reading from files

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24632 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Maurus Cuelenaere 2010-02-13 14:41:00 +00:00
parent 4c658f74a7
commit 9bf28debd8
4 changed files with 297 additions and 13 deletions
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15
apps/plugins/lua/liolib.c
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@ -245,24 +245,13 @@ static int io_lines (lua_State *L) {
** =======================================================
*/
static int read_number (lua_State *L, int *f) {
char buf[10]; /* Maximum uint32 value is 10 chars long */
lua_Number d;
int i = 0;
/* Rather hackish, but we don't have fscanf.
Was: fscanf(f, LUA_NUMBER_SCAN, &d); */
memset(buf, 0, 10);
rb->read(*f, buf, 10);
while(isdigit(buf[i]) && i < 10)
i++;
if(i == 0) return 0;
else {
rb->lseek(*f, i-10, SEEK_CUR);
d = rb->atoi(buf);
if (PREFIX(fscanf)(*f, LUA_NUMBER_SCAN, &d) == 1) {
lua_pushnumber(L, d);
return 1;
}
else return 0; /* read fails */
}